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Lightning arrester choosing for 10kV side with no load of 220kV main transformer

机译:雷电避雷器选择10kV一侧,无负载220kV主变压器

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Through the analyzing to arrester thermal breakdown on 10kV side with no load of 220kV main transformer, the fault direct cause is conformed that because the normal voltage of arrester (YH5WS-17/45) is too low, the arrester get over heat, and then thermal breakdown happens. The right nominal voltage choosing methods for gapless arrester and the possibility of gap zinc oxide arrester application are presented in this paper. The shortcoming of the B-phase direct grounding operating type and a arrester parallel connecting with each phase on 10kV side of transformer is the best protecting method are pointed out.
机译:通过分析到10kV侧的避雷器热分解,无负载220kV主变压器,故障直接原因符合,因为避雷器的常规电压(YH5WS-17/45)太低,避雷器过热,然后热分解发生。本文介绍了用于无效避雷器的右标称电压选择方法和间隙氧化物避雷器应用的可能性。 B相直接接地操作型的缺点和与变压器10kV侧上的每个相的避孕件平行连接是最佳的保护方法。

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